Error(s) in re-building vignettes:
--- re-building ‘dftotable.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'dftotable.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘dftotable.Rmd’

--- re-building ‘labeltable.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'labeltable.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘labeltable.Rmd’

--- re-building ‘sumtable.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'sumtable.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘sumtable.Rmd’

--- re-building ‘vtable.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'vtable.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘vtable.Rmd’

--- re-building ‘vtablefunction.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'vtablefunction.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘vtablefunction.Rmd’

--- re-building ‘vtablehelpers.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'vtablehelpers.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘vtablehelpers.Rmd’

SUMMARY: processing the following files failed:
  ‘dftotable.Rmd’ ‘labeltable.Rmd’ ‘sumtable.Rmd’ ‘vtable.Rmd’
  ‘vtablefunction.Rmd’ ‘vtablehelpers.Rmd’

Error: Vignette re-building failed.
Execution halted